Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    19/05/2026, 00:46

General

  • Target
    2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe
  • Size 53KB
  • Sample260519-a44e8aax5q
  • SHA256 3d943095f2ee5236779dd53bce15b759611924cba4459403664d8f884d1b0de8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 1 IoCs
  • Custom signature
    Detection of Cryptolocker Samples 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5248
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4948

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        asih.exe

        • Path C:\Users\Admin\AppData\Local\Temp\asih.exe
        • Size 53KB
        • SHA256 f843bfb9a77e8602205994c470ca815f40b5344feb42e943ccc2bf0c61a21e3f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4948-17-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/4948-18-0x0000000002170000-0x0000000002176000-memory.dmp

        memory/5248-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/5248-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/5248-2-0x00000000007D0000-0x00000000007D6000-memory.dmp